Book of Horror Review
Book of Horror is a horror book slot from Spinomenal on a classic 5×3 grid with 10 fixed lines. Classic horror monsters guard the book.
10 fixed lines
Line bets run from 0.01 to 7. The top symbol pays 10×, 100×, 1,000× and 5,000× the line bet for two to five of a kind.
The expanding symbol is chosen once by the wheel and stays for the whole round.
Book of Horror Features
The book
The book substitutes for every symbol and pays as a scatter anywhere: 2×, 25× or 250× the bet for three, four or five. Three or more start 10 free spins, and more books during the round add spins.
Wheel and expanding symbol
When free spins start, a wheel picks one symbol to expand for the whole round. After each spin it expands to cover its reels whenever that creates a win, and pays on all lines even when its reels aren't adjacent.
RTP, maximum win and buy
The demo is set to 95% RTP, caps wins at 5,000× the bet and lists a free spins buy at 104× the bet. Compare Book of Medusa, which uses the same wheel.
Book of Horror Pros and Cons
Strengths
- Classic book rules
- 5,000× cap
- Bonus buy
Limitations
- One expanding symbol all round
- High buy price
Our Verdict
Book of Horror is a spooky but standard book slot.
Book of Horror FAQs
How are free spins triggered in Book of Horror?
Three or more books anywhere give 10 free spins.
How is the expanding symbol chosen?
A wheel picks it at the start of free spins, for the whole round.
Can I buy the bonus?
Yes, 104× the bet where the casino allows it.
Sources and game-version notes
Information checked 1 November 2026.
RTP, lines, stake range, paytable values, buy prices and maximum win were read from this demo's start-up configuration on 1 November 2026; the RTP shown is the demo's setting and casinos can run other versions. We couldn't open this game's own help files, so the feature rules follow VegasSlotsOnline's description of Book of Rampage – Reloaded and the paytable of Spinomenal's Book of Medusa, which uses the same wheel and buy price. Check the help screen in the demo to confirm them.
